FIGURE 1.
Inter-rater reliability for six raters on Personal and Social Performance Scale (PSP) using Intraclass Correlation Coefficient (ICC)
| PSP item (scale range) | Range of ratings used by raters | ICC value (95% CI) |
|---|---|---|
| Total score (1 – 100) | 39 – 90 | 0.85 (0.68–0.96) |
| 10-point intervals (1–10 to 91–100) | 31–40 – 81–90 | 0.80 (0.59–0.95) |
| Subarea A (1 – 6) | 1 – 5 | 0.92 (0.80–0.98) |
| Subarea B (1 – 6) | 1 – 3 | 0.59 (0.31–0.87) |
| Subarea C (1 – 6) | 1 – 4 | 0.60 (0.31–0.87) |
| Subarea D (1 – 6) | 1 – 2 | 0.60 (0.32–0.88) |